Mechanical movement.



PATENTED JUNE 16, 1908.

x G. HOLL-IDAY. MECHANICAL MOVEMENT.

APPLIUATION FILED SEPT. 5, 1902;

N0 MODEL.

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WITNESSES m: mums wz'rzas cu. vnmommon wnsu UNITED STATES iatented June 16, 1903.

PATENT OFFICE.

MECHANICAL MOVEMENT.

SPECIFICATION formingpart of Letters Patent N o. 730,915,01atedJune 16, 1903. Application filed September 5. 1902. erial No. 122,162. (No model.)

To all whom it may concern.-

Be it known that I, GAVIN HOLLIDAY, a citizen of the United States, residing at Saugus, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvementsin lWIechanicalll/Iovements; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to an improved mechanical movement.

The object of my invention is to produce a simple and eflicient mechanism for rotating two adjacent rotatable elements in opposite directions.

Another object is to make a movement of this kind which can be conveniently held in one hand and operated by the other.

The invention consists in the devices and combinationsof deviceshereinafterdescribed, and particularly defined in the claims.

111 the accompanying drawings, Figure 1 is a side elevation of the device, and Fig. 2 is a front elevation of the device with one of the rotatable members and its ratchet-wheel removed for the sake of clearness.

In the accompanying drawings the frame, conveniently in the form of a rod 1, supports the rotatable members 2, which are loosely mounted on the shaft or pin 3, rigidly secured to the rod 1. The upper end of the rod 1 is bifurcated or forked, and loosely mounted on the shaft 3 is an oscillatory pulley 4., carrying a pawl 5, adapted to engage either the one or the other of two ratchet-wheels 6 and '7, secured, respectively, to the members 2. The pawl 5 consists of a sliding pin loosely mounted in abearing 8, secured to or formed integrally with the pulley 4. When the pulley moves in one direction-as, for example, in the direction of the arrow 9the pawl 5will be slid,by engagement with the inclined sides of the teeth of the ratchet-wheel 7 to the left as viewed in Fig 1, and its left-hand end will engage and rotate the ratchet-wheel 6. Conversely, when the pulley i oscillates in the opposite direction the inclined sides of the teeth of the ratchet-wheel (3 will slide the pawl 5 to the right and cause it to engage and rotate the ratchet-wheel 7 in the opposite direction to the direction of rotation imparted to the ratchet-wheel 6. Oscillations of the pulleyet rotate the ratchet-wheels in opposite directions. Any convenient means may be em ployed to oscillate the pulley 4. In the draw ings I have shown a slide 10, embracing the rod 1 and adapted to slide up and down thereon, having attached thereto one end of a cord or belt 11, which passes over the pulley 4 and has its other end attached to the end of the spring 12, conveniently consisting of a piece of elastic rubber. The pin 13 constitutes means for securing the fixed end of the spring 12 and a stop to limit the upward movement of the slide 10. Repeated reciprocations of the slide 10 impart oscillations to the pulley 4. The pulley 4, it will be noted, constitutes an oscillating pawl-carrier, so constructed and arranged as to impart opposite rotary movements to the two ratchets.

In the specific application of my movement to the chromatrope the ratchets carry the rotatable members 2, which constitute the disks of the chromatrope. I

It will be observed that the rod 1 may be conveniently held by one hand while the other is used to reciprocate the slide 10 for rotating the disks.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent-'- 1. A mechanicalmovement, having, in com bination, two oppositely toothed ratchet wheels, a pawl-carrier, a pawl carried thereby adapted to engage either the one or the other ratchet-wheel, and means for oscillating the pawl-carrier, substantially as described.

2. A mechanical movement, having, in combination, two rotatable elements, a device to engage and rotate said members and means for oscillating the device to rotate the members in opposite directions, substantially as described.

3. Amechanicalmovement, having,in com- 5 bination, two rotatable elements located adjacent to each other and providedwithratchetteeth on their adjacent sides, an oscillatory pawl-carrier located between the rotatable members, a pawl consisting of a pin slidingly ICO be slid in one direction by the inclined teeth of one ratchet-wheel so as to engage and rotate the other ratchet-wheel when the pawlcarrier is moved in one direction, and vice versa, substantially as described.

5. A mechanical movement, having, in combination, a frame of a shape convenient for holding in the hand, an oscillating member, a reciprocable slide supported on the frame,

connections between the slide and the oscillating member for actuating the latter from the former, two rotatable elements, and devices operated by the oscillating member for rotating the rotatable elements in opposite directions, substantially as described.

6. A mechanical movement,.having,in combination, a rod to be held in the hand, rotatable elements supported by the rod, a slide mounted on the rod, connections between the slide and rotatable elements for rotating them in opposite directions, substantially as described.

7. A mechanical movement, having, in combination, a rod to be held in the hand, a pulley supported by the rod, a slide, a spring having one end secured to the rod, a belt connected to the slide and spring and passing over the pulley, a rotatable element mounted on the rod and connections between the pulley and rotatable element for rotating the latter from the former, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

GAVIN HOLLIDAY.

lVitnesses:

HORACE VAN EVEREN, FRED O. FISH. 

